/*
* Copyright (C) Microsoft. All rights reserved.  
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not 
* use this file except in compliance with the License.  You may obtain a copy 
* of the License at http://www.apache.org/licenses/LICENSE-2.0  
* 
* THIS CODE IS PROVIDED *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED 
* WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE, 
* MERCHANTABLITY OR NON-INFRINGEMENT. 
*
* See the Apache License, Version 2.0 for specific language governing 
* permissions and limitations under the License.
*
*/
#pragma once

#include <baja/common.hpp>
#include <baja/error.hpp>
#include <baja/assert.hpp>

namespace baja {

// this is an extremelly silly class whose purpose is just to encapsulate a captured pointer
template <class Ti> 
class capturable
{
public:
    capturable() {}

    void set(const std::shared_ptr<Ti>& observer)
    {
        if (_captured.lock())
        {
            return;
        }

        _captured = observer;
    }

    void release()
    {
        _captured.reset();
    }

    std::shared_ptr<Ti> get()
    {
        return _captured.lock();
    }

private:
    std::weak_ptr<Ti> _captured;
};

} // namespace baja